<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>0.9复习vue源码</title>
</head>
<script src="./index.js"></script>
<body>
    
</body>
</html>

<script>
    let vm = new Vue({
        data: {
            userName: '蒋皓天',
            job: '前端工程师'
        },
        watch: {
            
        }
    })

    console.log('vue实例:', vm)
</script>